My pushing on the 35 Rem was primarily intended to mean, 'hold velocities to 35 Rem levels or a bit less if using hard non expanding bullets.' Doesn't matter which 35 cartridge is pushing on the bullets, if speeds are over 2000 fps at impact, it's difficult to get your alloy hard enough to prevent breakup or expansion, which isn't desirable if one wants quick kills with minimum meat ruined.
Witnessing the little 38 FN bullet hitting an animal, up to elk size, with starting velocity of 1800 fps, with no expansion is a real revelation. The wound will be a bit over an inch in diameter straight through, and critters just fold their wings and hit the ground. (The longest penetration I've had with one inch wound at exit was 21 inches.) I'm sure it would have been doing a good job yet with another 20 inches or so.
If one want's to use more powerful cartridges like the 358 Win, 35 Whelen etc, bullet weight should be high, like 250 gr if the gun will chamber that much. Then keep alloy hardness under 16 BHN max, preferably 14 BHN, and drive them at about 2400 fps. The extra weight will help them penetrate and tear your game all to bloodshot hamburger.
I shot a bear with the 180 gr FN, at 1800 fps, bullet hardness around 14, and range only 40 feet or so. The bullet stayed inside the little 100 pound bear going only through the rib cage at a slight angle. The wound overall was smaller than if the bullet had been all hard, and the bear died slower. The wound was fairly large where the bullet entered but left only a mushroom size hole through the heart, which was a lalf inch diameter. 180 gr just can't push such a big mushroom efficiently.
